| Name | Penstemon incertus Brandegee |
| Authorship | Brandegee |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Penstemon Schmidel |
| GUID | urn:lsid:ipni.org:names:808142-1 |
| Citation | Bot. Gaz. 27: 454 |
| Holdings | 14 Specimens held in the Harvard University Herbaria identified as Penstemon incertus Brandegee |
| Identification made in | [no date] (13), 1942 (1) |